Abstract
How are tight junctions maintained? In this issue of Cell, Wells et al. (2006) provide intriguing evidence for a new pathway that links polarity proteins and vesicle transport to the maintenance of tight junctions, through the control of Cdc42 by Rich1, a GTPase-activating protein.
MeSH terms
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Animals
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Cell Polarity / physiology*
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GTPase-Activating Proteins / metabolism*
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Humans
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Membrane Proteins / metabolism*
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Protein Transport / physiology
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Signal Transduction / physiology
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Tight Junctions / metabolism*
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Transport Vesicles / metabolism*
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cdc42 GTP-Binding Protein / metabolism
Substances
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GTPase-Activating Proteins
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Membrane Proteins
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cdc42 GTP-Binding Protein